DE602004016474D1 - Optische abtastvorrichtung - Google Patents

Optische abtastvorrichtung

Info

Publication number
DE602004016474D1
DE602004016474D1 DE602004016474T DE602004016474T DE602004016474D1 DE 602004016474 D1 DE602004016474 D1 DE 602004016474D1 DE 602004016474 T DE602004016474 T DE 602004016474T DE 602004016474 T DE602004016474 T DE 602004016474T DE 602004016474 D1 DE602004016474 D1 DE 602004016474D1
Authority
DE
Germany
Prior art keywords
side beams
crosstalk cancellation
subsidiary
main beam
arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE602004016474T
Other languages
English (en)
Inventor
Bernardus H Hendriks
Coen T Liedenbaum
Willem M Coene
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of DE602004016474D1 publication Critical patent/DE602004016474D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
    • G11B7/1365—Separate or integrated refractive elements, e.g. wave plates
    • G11B7/1367—Stepped phase plates
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation
DE602004016474T 2003-03-17 2004-03-15 Optische abtastvorrichtung Expired - Fee Related DE602004016474D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03100672 2003-03-17
PCT/IB2004/050250 WO2004084202A1 (en) 2003-03-17 2004-03-15 Optical scanning device

Publications (1)

Publication Number Publication Date
DE602004016474D1 true DE602004016474D1 (de) 2008-10-23

Family

ID=33016955

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004016474T Expired - Fee Related DE602004016474D1 (de) 2003-03-17 2004-03-15 Optische abtastvorrichtung

Country Status (8)

Country Link
US (1) US20060171009A1 (de)
EP (1) EP1606808B1 (de)
JP (1) JP2006520982A (de)
KR (1) KR20050109998A (de)
CN (1) CN100377234C (de)
AT (1) ATE408222T1 (de)
DE (1) DE602004016474D1 (de)
WO (1) WO2004084202A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008059761A1 (fr) * 2006-11-16 2008-05-22 Nec Corporation Dispositif à tête optique et dispositif d'enregistrement/de reproduction d'informations optique
JP2008268586A (ja) * 2007-04-20 2008-11-06 Ricoh Co Ltd 光走査装置及び画像形成装置
JP4978310B2 (ja) * 2007-05-29 2012-07-18 旭硝子株式会社 光ヘッド装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3238497B2 (ja) * 1992-11-12 2001-12-17 松下電器産業株式会社 光ピックアップヘッド装置
KR100214046B1 (ko) * 1995-03-27 1999-08-02 마츠시타 덴끼 산교 가부시키가이샤 초해상 광헤드장치
JPH11144252A (ja) * 1997-11-11 1999-05-28 Pioneer Electron Corp 記録情報再生装置におけるクロストーク除去方法
US6373808B1 (en) * 1999-10-08 2002-04-16 Lg Electronics Inc. Optical pick-up apparatus capable of eliminating a cross-talk component from adjacent tracks
US6597642B1 (en) * 1999-11-12 2003-07-22 Matsushita Electric Industrial Co., Ltd Photodetector unit, and optical pickup, optical reproduction apparatus, and optical recording apparatus equipped with the same
JP3384393B2 (ja) * 1999-12-15 2003-03-10 日本電気株式会社 光ヘッド装置及び光学式情報記録再生装置並びにラジアルチルト検出方法
JP3984426B2 (ja) * 2001-03-13 2007-10-03 パイオニア株式会社 情報再生装置、信号処理装置、情報再生方法および光学式記録媒体
JP2002298364A (ja) * 2001-03-30 2002-10-11 Pioneer Electronic Corp 情報再生装置、信号処理装置および情報再生方法
US7064900B2 (en) * 2001-11-22 2006-06-20 Sony Corporation Optical pickup device and optical disk device and optical device and composite optical element
US7184387B2 (en) * 2002-09-24 2007-02-27 Koninklijke Philips Electronics N.V. Optical scanning device

Also Published As

Publication number Publication date
JP2006520982A (ja) 2006-09-14
EP1606808A1 (de) 2005-12-21
CN1762007A (zh) 2006-04-19
EP1606808B1 (de) 2008-09-10
US20060171009A1 (en) 2006-08-03
WO2004084202A1 (en) 2004-09-30
CN100377234C (zh) 2008-03-26
KR20050109998A (ko) 2005-11-22
ATE408222T1 (de) 2008-09-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee